Am 22.11.2014 um 17:19 schrieb Wietse Venema: > Robert Schetterer: >> Hi Andreas , there a "wide" reports that google sometimes fails somehow >> with ipv6, i investigated in this hardly , it simply looks its their >> bug, my best speculation goes in sometimes not working spf ipv6 stuff at >> their site > > My domain has no SPF, but it signs all mail with DKIM. Google > decided to reject a single email message at end-of-DATA on 11 Nov > 2014 11:55:15 -0500. Minutes later, the same email message passed > (see logfile records below). > > Given that TCP worked, I suspect that some DNS lookup failed (PTR, > AAAA, DKIM, etc.). The entire session lasted only a few seconds, > so I suspect they use short timeouts without retries. > > Wietse
Ok ,so it seems , use ipv4 only for them, is the best workaround these days > > Nov 11 11:55:15 spike postfix/smtp[22958]: 3jcZv4004YzJrPw: > to=<censored>, relay=aspmx.l.google.com[2607:f8b0:400d:c04::1a]:25, > delay=3.6, delays=0.12/0.01/2.6/0.93, dsn=5.7.1, status=bounced > (host aspmx.l.google.com[2607:f8b0:400d:c04::1a] said: 550-5.7.1 > [2604:8d00:189::2] Our system has detected that this message does > not 550-5.7.1 meet IPv6 sending guidelines regarding PTR records > and authentication 550-5.7.1 . Please review 550-5.7.1 > https://support.google.com/mail/?p=ipv6_authentication_error for > more 550 5.7.1 information. l17si30149401qaj.81 - gsmtp (in reply > to end of DATA command)) > > Nov 11 11:58:29 spike postfix/smtp[22980]: 3jcZyr2BpqzJrPw: > to=<censored>, relay=aspmx.l.google.com[2607:f8b0:400d:c04::1a]:25, > delay=1.4, delays=0.11/0.01/0.19/1.1, dsn=2.0.0, status=sent (250 > 2.0.0 OK 1415725109 k30si37581932qge.88 - gsmtp) > Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
